The Department of Nuclear Medicine provides molecular imaging services as well as Radioimmunoassays and Radionuclide treatments. Nuclear medicine uses small amounts of radioactive materials to diagnose and treat a variety of diseases. Nuclear imaging differs from x-rays in that the organ function is evaluated rather than the structural appearance.

       Our mission is to provide comprehensive and affordable nuclear medicine services to all patients that are referred to our department.

      Our vision is to become the preferred referral center for nuclear medicine procedures in the Eastern NCR and neighboring areas.

      Rizal Medical Center is one of the first institutions in the Philippines to offer nuclear medicine services. The radioisotope laboratory was established in 1966 through the initiative of Dr. Flaviano Felizardo in cooperation with the International Atomic Energy Agency (IAEA) supported by the Philippine government.



Radioimmunoassay/Immunoradiometric Assay (IRMA/RIA)

  • Free T3 RIA
  • Free T4 RIA
  • Thyroglobulin
  • Anti-Thyroglobulin Antibody
  • Prostatic Specific Antigen
  • Carcinoembryonic Antigen

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Nuclear Imaging




Tc99m Thyroid Scan

Evaluation of thyroid function, size and position of palpable nodules


I131 Thyroid Scan

Evaluation of thyroid function, size and position of palpable nodules

I131 Whole Body Scan

Evaluation for functioning thyroid tissue either recurrent in the thyroid or metastases


Bone Scan

Localization of bone metastases



Characterize nature of breast mass in dense breast with suspected mass, breast with previous operations, trauma or implants


Parathyroid Scan

Detect and localize parathyroid adenomas


GFR / Renal Scan

Evaluation of renal perfusion and function, evaluation of renal trauma, diagnosis of renovascular hypertension, detection and evaluation of renal collecting system obstruction


G.I. Bleeding Scan

Localize gastrointestinal bleeding sites


Hepatobiliary Scan

Exclude cystic or common bile duct obstruction, identify biliary leakage, calculation of gall bladder ejection fraction, evaluation of liver morphology and function


Liver / Spleen Scan

Evaluation of both liver and spleen RES function and size, metastasis lesions in the liver-spleen, evaluation of residual functioning splenic tissue


Lung Perfusion Scan

Diagnosis and evaluation of pulmonary embolism


Sentinel Node Lymphoscintigraphy

Determination of the sentinel lymph node



Evaluation of nasolacrimal drainage apparatus


Myocardial Perfusion Scan

Detection of coronary artery disease and myocardial perfusion abnormalities, evaluation of myocardial perfusion, differentiation of scar tissue from viable myocardium


Renal Cortical Scan

Evaluate the renal cortex for scarring from frequent kidney infections, evaluate and quantify differential function of each kidney, detect and localize a renal mass, detect and differentiate between acute and chronic pyelonephritis, evaluate renal transplant


Meckel’s Diverticulum Scan

Detection and localization of a Meckel’s diverticulum and other pathologic structures containing functioning gastric mucosa


Radionuclide Therapy

Radioactive Iodine Ablation Therapy

Bone Pain Palliation using Sr-89m or Sm-153


Other Special Procedures

Urea Breath Test


Department of Nuclear Medicine Consultants and Staff


Jeanelle Margareth T. Tang, MD, DPBSNM

Department Head, General Nuclear Medicine, PET/CT


Arnold C. Isidro, MD, DPSNM

General Nuclear Medicine, PET/CT, Radiosynovectomy


Eddie A. Lim, MD, FPSNM

General Nuclear Medicine, PET/CT, SIRT

Michelle D. Ogbac, MD, FPSNM

General Nuclear Medicine, PET/CT, SIRT

Dominic N. Velasco, MD, DPBSNM

General Nuclear Medicine, PET/CT



Merle P. Sintos, MMP

Radiation Protection Officer,

Health Physicist III


Rey Martin D. Goco Jr., RMT

Assistant Radiation Protection Officer

Medical Technologist II


Marvin N. Trio, RMT

Nuclear Medicine Technologist

Medical Technologist I


dept photo

From left to right: Arnold C.Isidro, MD, DPSNM Rey Martin D. Goco Jr, RMT Jeanelle Margareth T. Tang, MD, DPSNM (head, Nuclear Medicine) Eddie A. Lim, MD, FPSNM Edith T. Cerrer Marvin N.Trio, RMT



For inquiries, you may contact the Department of Nuclear Medicine through the TeleMed Service Hotline 09771910164. Monday-Friday from 7:00am – 4:00pm.